<!DOCTYPE html>
<html lang="en">

<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
</head>

<body>
    <div id="app">

        <div v-bind:style='{border: borderStyle, width: widthStyle, height: heightStyle}'></div>
        <div v-bind:style='objStyles'></div>
        <div v-bind:style='[objStyles,overrideStyles]'></div>
        <button v-on:click='handle'>切换</button>
    </div>
    <script src="../vue.js" type="text/javascript">
    </script>
    <script>
        var vm = new Vue({
            el: '#app',
            data: {
                borderStyle: '1px solid blue',
                widthStyle: '100px',
                heightStyle: '200px',
                objStyles: {
                    border: '1px solid green',
                    width: '200px',
                    height: '100px'
                },
                overrideStyles: {
                    border: '5px solid orange',
                    backgroundColor: 'blue'
                }
            },
            methods: {
                handle: function() {
                    this.heightStyle = '100px';
                    this.objStyles.width = '100px';
                }
            }
        });
    </script>



</body>

</html>